2025 Kawasaki KX™450X Base

Current Kawasaki Motorcycle Motocross Full-Size-Cross-Country KX™450X

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Year 2025
Make Kawasaki
Model KX™450X

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Product Details Specifications Photos

Year 2025
Manufacturer Kawasaki
Model Name KX™450X
Trim Name Base
Generic Type (Primary) Off-Road
Engine Type 4-stroke, single-cylinder, DOHC
Displacement 449cc
Cooling System Liquid-cooled
Bore 96.0mm
Stroke 62.1mm
Compression Ratio 12.5:1
Fuel System DFI® with 44mm Keihin throttle body
Ignition Digital CDI with handlebar-controlled power modes

2025 Kawasaki KX™450X

Tough terrain won't stop us from winning. With championship-proven technology and tuning to take on every challenge, the KX™450X motorcycle has what it takes to win outdoors. Get the off-road edge by riding the bike built to stay ahead of the rest.

Features may include:

POWER & PERFORMANCE

BUILT TO STAY AHEAD

The same championship-proven engine performance found in KX™ motocross bikes propels the KX™450X motorcycle to the finish line. Stay ahead of the competition with a powerful engine that delivers broad, useable torque and strong, responsive power.

CROSS-COUNTRY TUNED SUSPENSION

DOMINATE OFF-ROAD CONDITIONS

The KX™450X motorcycle's high-performance, race-ready suspension is optimized for cross-country racing, especially on aggressive trails.

ADVANCED TECHNOLOGY

NEXT-LEVEL PERFORMANCE

The KX™450X motorcycle's advanced controls are streamlined for rider convenience. Kawasaki TRaction Control (KTRC), Power Mode Selection, and Launch Control Mode are available at the push of a button. These features enable riders to quickly adjust power delivery and traction for riding conditions and preference. The KX450X provides advanced technology designed to inspire confidence.

CHASSIS & ERGONOMICS

RACE-WINNING CAPABILITY

Stay ahead of the competition with a strong and lightweight chassis, agile handling, and exclusive ERGO-FIT® technology.

ADDITIONAL

Lightweight aluminum perimeter frame

Straight exhaust port and center exhaust

ODI lock-on grips

Quick-release side cover offers tool-less air filter access

Streamlined ergonomics for easy rider movement

Coned disc-spring hydraulic clutch

Engine

Engine Type 4-stroke, single-cylinder, DOHC

Displacement 449cc

Cooling System Liquid-cooled

Bore 96.0mm

Stroke 62.1mm

Compression Ratio 12.5:1

Fuel System DFI® with 44mm Keihin throttle body

Ignition Digital CDI with handlebar-controlled power modes

Drivetrain

Transmission 5-speed, return shift, with wet multi-disc manual clutch and hydraulic clutch actuation

Final Drive Chain

Chassis

Frame Type Aluminum perimeter

Suspension

Front Suspension 49mm Showa inverted telescopic coil-spring fork with 21-way adjustable compression and 22-way adjustable rebound damping

Rear Suspension Uni-Trak® gas charged shock with piggyback reservoir with adjustable dual-range compression damping (19-way low speed and 4.25 turn stepless high speed), 23-way adjustable rebound damping and stepless adjustable preload

Brakes

Front braking system Single semi-floating 270mm Braking/Sunstar petal disc with Brembo master cylinder and dual-piston caliper

Rear braking system Single 240mm Braking/Sunstar petal disc with single-piston caliper

Wheels & Tires

Front Tire 80/100-21

Front Wheel Travel 12.0 in

Rear Tire 120/80-18

Rear Wheel Travel 12.1 in

Dimensions

Rake/trail 27.0°/4.6 in

Overall Length 85.6 in

Overall Width 32.1 in

Overall Height 49.6 in

Ground Clearance 13.2 in

Seat Height 37.4 in

Wheelbase 58.3 in

Capacities

Fuel Capacity 1.64 gal

Weights

Curb Weight 239.8 lb without fuel / 249.9 lb

Color

Colors Lime Green

Features

Features Electronic Rider Aids: Power Modes, Kawasaki TRaction Control (KTRC), Launch Control Mode | Smartphone Connectivity via RIDEOLOGY THE APP KX™, ERGO-FIT®